Steam-whistle.



PATENTED OCT. 3, 1905.

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No. 801,081. PATENTED 0GT.3,1905.

J. T. HOBAN.

STEAM WHISTLE.

APPLICATION FILED APR.12,1904.

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UNITED STATES PATENT OFFIOE.

JOHN T. HOBAN, OF DAYTON, OHIO, ASSIGNOR TO BUCKEYE IRON & BRASS WORKS, OF DAYTON, OHIO, A CORPORATION OF OHIO.

STEAM-WHISTLE.

Specification of Letters Patent.

Patented Oct. 3, 1905.

Application filed April 12, 1904. Serial No. 202,873.

To all whmn it may concern.-

Be it known that 1, JOHN T. HOBAN, a citizen of the United States, residing at Dayton, in the county of Montgomery and State of Ohio, have invented new and useful Improvements in Steam-Vhistles, of which the following is a specification.

This invention relates to steam-whistles, the improvements being directed particularly to that type of whistle known as chime; and the object of the invention is to provide a simple device of this character the sounds emitted from which upon the introduction of a blast of steam into the several compartments thereof are not muflied, as is the case with certain existing forms of whistles with which I am familiar. On the contrary, by virtue of my novel construction, two simple adaptations of which are illustrated in the accompanying drawings, forminga part of this specification and hereinafter described, I am enabled to produce sounds that are clear and distinct.

WVhile I have entitled the invention a steamwhistle, this has been adopted simply as a matter of convenience, for the reason that other agents than steam may be employed for obtaining the sounding of the whistle.

The improved whistle involves a bowl having an apron and a bell operatively associated with said bowl having partitions the lower edges of which are separated from the marginal portion of the apron, by reason of which said marginal portion is left free for vibration in order to obtainloud and distinct tones from the whistle entirely free from mufHing. The presence of the partitions in the bell divides the latter interiorly into a series of compartments, and these compartments, as hereinafter described, are of different lengths, thereby upon the entrance of a blast of steam of proper force into said compartments caus ing the production of a chord of tones, or, as it is known in the art, a chime.

Referring to the drawings, Figure 1 is an elevation of a whistle including my invention with a portion of the bowl thereof in section. Fig. 2 is a horizontal sectional plan view, the section being taken just above the top of the bowl. Fig. 3 is a bottom plan view of the bell separated from the bowl. Fig. 4 is a View of a modified form of whistle, the bowl thereof being shown in elevation and the bell in section.

I will first describe the organization illustrated by Figs. 1, 2, and 3.

Referring to Fig. 1, a steam-supply pipe for the whistle is therein shown, the same being denoted by 2 and containing a valve operable in the usual manner. In connection with the supply-pipe 2 and surrounding the upper end of the same is a bowl, as 3, the two partsbeing united in a common manner and the supply-pipe having outlets for the steam within the bowl. At the top of the steam-supply pipe 2 is a disk 4:, constituting a part of the bowl and known in the art as an apron. The upper surface of this disk is in the same horizontal plane with the corresponding portion of the rim of the body of the bowl, but is slightly separated therefrom to provide an annular opening or orifice I for the escape of steam which passes into the several compartments of the bell 5. The bell is shown as containing interiorly three compartments of unequal length, whereby on the entrance of steam into such compartments from the bowl 3 a sound like a chime or a scale of notes is produced. The partition part of the bell is denoted by 5, and it consists of a central web or body from which the partitions Gradiate. I have represented three of these partitions or walls and naturally a corresponding number of compartments or chambers. The number of compartments or chambers may, however, be either increased or decreased, if desired, by similarly increasing or decreasing the partitions.

The tops of the chambers of course are covered or closed by flanges constituting part of the partition member. The lower edges of the partitions are slotted or recessed, as at 6, the slots or recesses being of approximately rectangular formation. The solid portions of the lower edges of the several partitions bear upon the apron of the bell at substantially the center thereof and also against the rim of the body of the bowl, and to maintain this relation I provide the central web or body IOO tions solidly against the central part of the apron and to bring the outer ends of the solid portion of said partitions and the cylindrical portion of the bell solidly against the body of the bowl in order to rigidly unite the whistle parts. \Yith the parts thus assembled it will be perceived that the lower edges of the several partitions 6 extend short of the marginal portion of the apron or disk &that is, the marginal portion of the apron and the lower edges of the partitions are separated or spaced apart in order to leave such marginal portion wholly free for vibration, by virtue of which I obtain clear, distinct, and loud sounds.

Practically the lower edges of the partitions 6 are removed, and, in fact, I will hereinafter disclose a form of the invention wherein the lower edges of the several partitions extend short of the apron of the bowl throughout their entire length.

The whistle constructed as hereinbefore described may be made in the manner disclosed by my contemporaneously-pending application for patent filed March 28, 1904:, Serial No. 200,el.2at-that is to say, the cylindrical portion of the bell and the partition thereof may be cast. The form of the invention represented by Fig. 41, however, is made in a different way. The bowl part of the whistle (represented by Fig. 4) is constructed exactly like the corresponding part illustrated in full by l. The difference between the two forms of the whistle resides in the bell. Referring particularly to said Fig. 4, I would state that the cylindrical portion 10 of the bell is made from drawn tubing cut from suitable stock to the desired length and apertured in its lower edge to provide a series of semicircular apertures for the escape of the steam or equivalent agent. These same apertures, it will be observed, are present in the other form of the whistle. The partition part of the whistle, (shown in said Fig. 4,) is denoted in a general way by 11, and it is made in the form of a casting, it consisting of a central web or body, from which the three partitions 12 radiate. The partition part is adapted to accurately fit within the cylinder 10, with the outer edges of the said partitions in solid abutment with the inner wall of the cylinder or tube 10. The partition part 11 has at its opposite ends threaded studs, as 13 and 13, respectively, the stud 13 being tapped centrally into the apron of the bowl. The several partitions 12, which, it will be understood, are of unequal length, have integral therewith tops for the several interior chambers of the bell: The partition part 11 has a cap 14, shown as integral therewith, and having an annular groove on the under side thereof near its periphery to receive the upper edge of the tubular cylinder 10, the two parts being soldered together or otherwise joined. The stud 13, to which refermaintained by the threaded stud or projection 13. The lower edges of the several partitions 12, it will be seen, extend short of the lower end of the tube 10, so that said lower edges will be wholly separated from the apron of the bowl in order to leave the marginal portion of such apron free for vibration. The stud 13 is slightly enlarged or expanded above the threaded portion thereof, such enlarged or expanded portion being flattened on its under side to bear against the upper side of the apron around the central threaded hole thereof, the same as with the other form. This aids in securing a [irm relation between the several parts of the whistle.

I have described two forms of the whistle as embraced by my invention. I do not limit myself, however, to the relation of the parts, construction, nor manner of assemblage set forth in such description, for divers changes may be adopted therein within the scope of my claims.

I claim 1. In a whistle, a bowl having an apron therein, the periphery of which is separated from the margin of the body of the bowl to thereby provide adischarge-orifice, and a bell having a tubular portion and a partition part therein, the partition part being provided at its lower end with a threaded stud tapped into the apron and the tubular portion bearing at its lower end solidly against the body of the bowl, said partition part having a plurality of partitions, the lower edges of which are separated from the marginal portion of the apron.

2. A whistle-bell consisting of a tubular part having apertures in its lower edge, and a partition part accurately fitted within said tubular part, having at its lower end a thread ed stud and at its upper end a cap grooved on its under side to receive said tubular part, said partition part having a series of longitudinal partitions, the lower edges of which extend short of the lower edge of the tubular part.

3. In a whistle, a bowl having an apron, a bell associated with said apron, and apartition part in the bell having a series of partitions, and solidly engaging the apron substantially centrally thereof, the marginal portion of the apron being free of the partitions.

4C. In a whistle, a bowl having an apron, a bell associated with said apron, and a partition part in the bell having a series of partitions and a stud fitted into the apron substantially centrally thereof and provided with a portion to abut solidly against the apron, the marginal portion of the latter being free of the partitions.

5. In a Whistle. a bowl having an apron, a tained against the marginal portion of the bell associated with said apron, and a partition body of the bowl by said stud. to part in the bell. having a series of partitions In testimony whereofl have hereunto set my and astud fitted into the apron approximately hand in presence of tWo subscribing Witnesses. centrally thereof and provided with a portion JOHN T. HOBAN. to abut solidly against the apron, the mar- Witnesses:

ginal portion of the latter being free of the JOSEPH H. HUBBELL, partitions, and the bell being solidly main- WILLIAM (J. IMBODEN. 

